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    SubjectRe: Alot of DMA errors in 2.4.18, 2.4.20 and 2.5.52
    On Thu, Dec 26, 2002 at 02:22:28PM +0100, Tomas Szepe wrote:
    > >
    > > hdparm -X69 /dev/hda will put it into UDMA5/ata100 mode as well
    > > (69 == 64 + UDMA mode). No need to specify it at boot time.
    >
    > Not true. You definitely need to use the ideX boot param AND
    > run hdparm -X?? /dev/hd? to make use of UDMA3+ on newer PDC
    > controllers (unless you apply the patch posted on Dec 24 by
    > Nikolai Zhubr).

    Driver says otherwise on RH8.0 + 2.4.20:
    iapetus /proc/ide# cat pdc202xx

    PROMISE Ultra series driver Ver 1.20.0.7 2002-05-23 Adapter: Ultra100 TX2
    --------------- Primary Channel ---------------- Secondary Channel -------------
    enabled enabled
    66 Clocking enabled enabled
    Mode MASTER MASTER
    --------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ------
    DMA enabled: yes no no no
    UDMA Mode: 5 0 0 0
    PIO Mode: 4 0 0 0


    --
    Frank
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